Testmaster LTD Address: 2nd Floor, Trung Yen 01 Building, KDT Trung Yen, Trung Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0107645667 Phone: 02898084342 Representative: Tran Xuan Khanh Adress: Zoom 615 CT3-KDT Van Khe, La Khe Ward, Ha Dong District, Ha Noi City Trung Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 24 - 11 - 2016